Snort mailing list archives

Re: Configuration tradeoffs


From: "Stewart L" <stewartl42 () gmail com>
Date: Wed, 27 Aug 2008 13:22:28 -0400

Overnight.  It was a great webinar, BTW. :)

Here is an example of what I did...

# Global Settings
preprocessor http_inspect: global iis_unicode_map unicode.map 1252

# Linux Web Servers
preprocessor http_inspect_server: server 192.168.100.1 profile apache ports
{ 80 8080 8180 } oversize_dir_length 500
[snip about 40 similar lines with different IP addresses.]

#Default Windows server for the rest
preprocessor http_inspect_server: server default  profile iis ports { 80
8080 8180 } oversize_dir_length 500

Stewart

On Wed, Aug 27, 2008 at 1:12 PM, Joel Esler <eslerj () gmail com> wrote:

How long have you had this running?
J

On Aug 27, 2008, at 12:14 PM, Stewart L wrote:

So,

I sat through a Webinar on common mistakes made when setting up Snort.
They mentioned that http_inspect needs to be configured to reduce false
positives.

I have my global configuration, I have my default server configuration,
then I added about 40 server configuration lines for my Linux Servers.

I'm seeing more packet loss since I configured all this up.   Went from
about 0.1% loss to more than 2%.

Am I doing something incorrect here? Or is this expected?

--
Stewart
--
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Joel Esler
  http://blog.joelesler.nethttp://www.dearcupertino.com
[m]






-- 
Stewart
--
You only lose what you cling to.
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